Two girl students clean the platform at a school in Xinjian County, east China's Jiangxi Province, Sept. 1, 2010. Most primary schools and middle schools in China started the new semester Wednesday. (Xinhua/Zhou Ke)

Students look at their homeworks at a school in Beijing, capital of China, Sept. 1, 2010. Most primary schools and middle schools in China started the new semester Wednesday. (Xinhua/Wu Xiaoling)